In general, silver jewelry is divided into silver-plated jewelry and non-plated one, such as platinum-plated jewelry.
Silver-plated jewelry: jewelry with fine silver lining, and treated surface by electroplating; plating method leads to its surface luster to be brighter than that of fine silver, with better reflecting effect, more durable to oxidation, and oxidation time depending on plating thickness.
Silver jewelry without plating: it’s apt to loss of luster as a result of sulfuration, airborne sulfur dioxide and silver undergo a chemical reaction and produce one layer of silver sulfide depositing on silver jewelry, which is like the principle of a sliced apple blackening after exposure to the air for a period of time. It needs to be maintained with silver polishing cloth to restore its metallic luster or clean with silver cleansing liquid.
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